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WO2000075380A1 - Chenal de coulee de recipients de fusion et poches de coulee - Google Patents

Chenal de coulee de recipients de fusion et poches de coulee Download PDF

Info

Publication number
WO2000075380A1
WO2000075380A1 PCT/EP2000/005090 EP0005090W WO0075380A1 WO 2000075380 A1 WO2000075380 A1 WO 2000075380A1 EP 0005090 W EP0005090 W EP 0005090W WO 0075380 A1 WO0075380 A1 WO 0075380A1
Authority
WO
WIPO (PCT)
Prior art keywords
tapping
melt
cross
shaped
tapping channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2000/005090
Other languages
German (de)
English (en)
Inventor
Manfred Schubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
SMS Demag AG
Schloemann Siemag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Schloemann Siemag AG, SMS Demag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to KR1020017015598A priority Critical patent/KR20020016818A/ko
Priority to JP2001501658A priority patent/JP2003501608A/ja
Priority to EP00936858A priority patent/EP1183398A1/fr
Priority to CA002376066A priority patent/CA2376066A1/fr
Priority to MXPA01012411A priority patent/MXPA01012411A/es
Priority to BR0011315-8A priority patent/BR0011315A/pt
Publication of WO2000075380A1 publication Critical patent/WO2000075380A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/14—Charging or discharging liquid or molten material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/001—Retaining slag during pouring molten metal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1518—Tapholes

Definitions

  • the invention relates to a tapping channel for tapping metal melts, preferably steel melts, from metallurgical melt vessels such as, for example, electric arc melting furnaces, electric resistance melting furnaces or ladles through a channel-shaped tapping opening arranged in the bottom of the vessel, the metal melt being coated with Sc paint melt at the time of the tapping.
  • metallurgical melt vessels such as, for example, electric arc melting furnaces, electric resistance melting furnaces or ladles
  • a channel-shaped tap opening extending through the refractory lining is arranged, through which the molten metal is drawn down into, for example, a melting pan.
  • a vortex is formed from the tap opening, which forms as a hollow vortex as the molten mass of Izbadsp L decreases, which also parts of the molten metal floating on the molten metal Seh lackenschme Lze captured and swirled, so that the originally existing separation between the molten metal and the smelting melt no longer existed and Seh lackenschme Lze was discharged together with the molten metal through the tap hole.
  • the oxidic slag conveyed into the melting pan with the molten metal in this way brings oxygen with it and leads, for example, to an increased consumption of aluminum for the required deoxidation of synthetic slag for the absorption of the oxides and of calcium for the modification of the oxidic inclusions.
  • the oxide product alumina ( AI2O3 ) worsens the casting properties of the molten metal and the oxygen from the FeO in the slag further complicates desulfurization and degassing.
  • a simple but expensive option is, for example, that a relatively large residual amount of molten metal ( between 10 to 30% of the capacity) remains in the metallurgical vessel, so that the hollow vortex does not reach the visual enamel.
  • the channel-shaped tap opening at least smoothly deviating from the circular shape being slit-shaped to elliptical, a hollow vortex cannot be formed at all, since a circular flow of the outflowing melt changes from the start through this slot-shaped design of the tap channel cross-section becomes.
  • the dimension of the cross-channel cross-section corresponds to a ratio of length l to width b of 2: 1 to 5: 1, preferably 3: 1 on the melt inlet side of the outlet channel.
  • this outlet channel cross section can be retained over its entire length, but can also change continuously towards the melt outlet side and finally change into a circular shape with a ratio of length to width of 1: 1.
  • FIG. 1 is a perspective view of a body element of a stove floor with a tapping channel according to the prior art
  • FIG. 1 A plan view of the body element corresponding to Fig. 1,
  • FIG. 3 is a vertical section along the line A-A of FIG. 2,
  • FIG. 4 is a perspective view of a body element of a stove bottom with a tapping channel according to the invention
  • FIG. 5 shows a plan view of the body element corresponding to FIG. 4,
  • FIG. 6 is a vertical section along the line A-A of FIG. 5,
  • FIG. 1 a body element 1 of a stove bottom is shown, the tapping channel 2 according to the state of the Technology contains.
  • the cross-section of the tapping channel 2 is circular throughout and of the same size, ie the cross-sectional area 3 on the melt inlet side 4 of the hearth corresponds to the cross-sectional area 6 on the melt rag side 5 of the hearth bottom.
  • this body element 1 is shown in a plan view and in Figure 3 along the line A-A of Fig. 2 in a vertical section, which clearly shows the round shape of the tapping channel over its entire length clearly.
  • FIG. 4 shows a body element 10 of a stove bottom, which has a tapping channel 11 according to the invention.
  • the tapping channel 11 is formed on the melt entry side with a slot-shaped cross section 13, the ratio of the length L to the width B of the cross section 13 (slot length L to the slot width B) being 3: 1 in the example shown.
  • the cross-section 13 changes continuously towards the melting point 14 and ends at a distance from the melting outlet side 14 in a circular cross-sectional surface shape 15, which then extends up to
  • the diameter of the circular cross-sectional area 15 is dimensioned such that the size of the lower circular area 15 corresponds to the size of the slot-shaped area 13. This ensures that, due to the change in the cross-sectional area, there is no constriction in the tapping channel 11, which would hinder the outflow of the melt.
  • FIG. 4 shows a top view of the body element 10 in FIG. 5 and in FIG Figure 6 as Verti alschn tt shown along the line AA of FIG. 5.
  • FIG. 7 shows a vertical section along line BB of FIG. 5.
  • the illustration on FIGS. 5, 6 and 7 clearly shows that the area size of the lower round cross-sectional area 15 approximately corresponds to the area size of the upper slit-shaped cross-sectional area 13 and furthermore, up to what distance from the melt exit surface 14 the slit-shaped cross-sectional area 13 to the lower round cross section 11 sf surface 15 changes continuously as an example.
  • the design of the tapping channel is not limited to the exemplary embodiment shown in FIGS. 4 to 7, but can be varied within wide limits depending on the conditions of the metallurgical melting vessel, if at least there is a deviation of the cross-sectional area of the tapping channel from the circular one Form is made.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

Lorsque la masse en fusion coule d'un récipient de fusion métallurgique par un trou de coulée pratiqué au fond du creuset, il peut se produire un tourbillon creux (vortex) qui entraîne un passage simultané indésirable du laitier. Pour empêcher la formation de ce tourbillon creux, le chenal de coulée (11) n'a pas une conception circulaire mais il a une forme de fente ou d'ellipse au moins au niveau du côté entrée (12) de la masse en fusion.
PCT/EP2000/005090 1999-06-04 2000-06-05 Chenal de coulee de recipients de fusion et poches de coulee Ceased WO2000075380A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1020017015598A KR20020016818A (ko) 1999-06-04 2000-06-05 용해로 및 주입래들용 배출채널
JP2001501658A JP2003501608A (ja) 1999-06-04 2000-06-05 溶融炉と鋳鍋の湯出し通路
EP00936858A EP1183398A1 (fr) 1999-06-04 2000-06-05 Chenal de coulee de recipients de fusion et poches de coulee
CA002376066A CA2376066A1 (fr) 1999-06-04 2000-06-05 Chenal de coulee de recipients de fusion et poches de coulee
MXPA01012411A MXPA01012411A (es) 1999-06-04 2000-06-05 Canal de sangria para hornos de fusion y caldero de colada.
BR0011315-8A BR0011315A (pt) 1999-06-04 2000-06-05 Canal de sangria para fornos de fundição e panelas de fundição

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19925598A DE19925598A1 (de) 1999-06-04 1999-06-04 Abstichkanal für Schmelzöfen und Gießpfannen
DE19925598.9 1999-06-04

Publications (1)

Publication Number Publication Date
WO2000075380A1 true WO2000075380A1 (fr) 2000-12-14

Family

ID=7910234

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/005090 Ceased WO2000075380A1 (fr) 1999-06-04 2000-06-05 Chenal de coulee de recipients de fusion et poches de coulee

Country Status (11)

Country Link
EP (1) EP1183398A1 (fr)
JP (1) JP2003501608A (fr)
KR (1) KR20020016818A (fr)
CN (1) CN1353770A (fr)
BR (1) BR0011315A (fr)
CA (1) CA2376066A1 (fr)
DE (1) DE19925598A1 (fr)
EG (1) EG22473A (fr)
MX (1) MXPA01012411A (fr)
TR (1) TR200103499T2 (fr)
WO (1) WO2000075380A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009003430A1 (fr) * 2007-06-29 2009-01-08 Paul-Antoine Wurtz Pièce moulée en matériau réfractaire

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004027440B3 (de) * 2004-06-04 2005-06-16 Refractory Intellectual Property Gmbh & Co. Kg Abstichrohr
JP2010125506A (ja) * 2008-11-28 2010-06-10 Kurosaki Harima Corp 上ノズルの配置構造
JP5266154B2 (ja) * 2009-07-17 2013-08-21 株式会社神戸製鋼所 スライドプレートの開閉に起因する偏流を抑制する整流構造

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944611A (en) * 1930-01-13 1934-01-23 American Rolling Mill Co Nozzle for pouring molten metal
DE1261284B (de) * 1964-12-05 1968-02-15 Stoecker & Kunz G M B H Ausgusstein fuer Giesspfannen, Zwischenbehaelter u. dgl.
US3779431A (en) * 1969-06-09 1973-12-18 Metacon Ag Slide closure mechanism for casting vessels for liquid metallic melts
EP0352353A1 (fr) * 1988-07-28 1990-01-31 INTRACON Handelsgesellschaft für Industriebedarf mbH Brique porte-busette d'une poche pour un obturateur d'une poche de coulée
DE4116723C1 (en) * 1991-05-17 1992-06-04 Mannesmann Ag, 4000 Duesseldorf, De Immersion tundish outlet giving quiescent melt flow into mould - includes channel with nozzle shape at inlet to receive stopper, with narrowest section at transition to channel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944611A (en) * 1930-01-13 1934-01-23 American Rolling Mill Co Nozzle for pouring molten metal
DE1261284B (de) * 1964-12-05 1968-02-15 Stoecker & Kunz G M B H Ausgusstein fuer Giesspfannen, Zwischenbehaelter u. dgl.
US3779431A (en) * 1969-06-09 1973-12-18 Metacon Ag Slide closure mechanism for casting vessels for liquid metallic melts
EP0352353A1 (fr) * 1988-07-28 1990-01-31 INTRACON Handelsgesellschaft für Industriebedarf mbH Brique porte-busette d'une poche pour un obturateur d'une poche de coulée
DE4116723C1 (en) * 1991-05-17 1992-06-04 Mannesmann Ag, 4000 Duesseldorf, De Immersion tundish outlet giving quiescent melt flow into mould - includes channel with nozzle shape at inlet to receive stopper, with narrowest section at transition to channel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009003430A1 (fr) * 2007-06-29 2009-01-08 Paul-Antoine Wurtz Pièce moulée en matériau réfractaire

Also Published As

Publication number Publication date
MXPA01012411A (es) 2004-09-10
EP1183398A1 (fr) 2002-03-06
JP2003501608A (ja) 2003-01-14
DE19925598A1 (de) 2000-12-07
EG22473A (en) 2003-02-26
TR200103499T2 (tr) 2002-07-22
KR20020016818A (ko) 2002-03-06
BR0011315A (pt) 2002-03-12
CA2376066A1 (fr) 2000-12-14
CN1353770A (zh) 2002-06-12

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